﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkId=234227

namespace BluewaterSoft.Notepad
{
  /// <summary>
  /// Provides application-specific behavior to supplement the default Application class.
  /// </summary>
  sealed partial class App : Application
  {
    /// <summary>
    /// Initializes the singleton application object.  This is the first line of authored code
    /// executed, and as such is the logical equivalent of main() or WinMain().
    /// </summary>
    public App()
    {
      this.InitializeComponent();
      this.Suspending += OnSuspending;
    }

    /// <summary>
    /// Invoked when the application is launched normally by the end user.  Other entry points
    /// will be used when the application is launched to open a specific file, to display
    /// search results, and so forth.
    /// </summary>
    /// <param name="args">Details about the launch request and process.</param>
    protected async override void OnLaunched(LaunchActivatedEventArgs args)
    {
      await ShowExtendedSplash(args.SplashScreen);

      if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
      {
        //TODO: Load state from previously suspended application
        //await SuspensionManager.RestoreAsync(); 
      }

      // Create a Frame to act navigation context and navigate to the first page
      var rootFrame = new Frame();
      rootFrame.Navigate(typeof(MainPage), args);

      // Place the frame in the current Window and ensure that it is active
      Window.Current.Content = rootFrame;
      Window.Current.Activate();
    }

    private static async Task ShowExtendedSplash(SplashScreen splash)
    {
      ExtendedSplash eSplash = new ExtendedSplash(splash, false);
      splash.Dismissed += new TypedEventHandler<SplashScreen, object>(eSplash.DismissedEventHandler);
      Window.Current.Content = eSplash;
      Window.Current.Activate();

      await Task.Delay(1000); //わざとらしく延長スプラッシュを表示してみる
    }

    protected async override void OnFileActivated(FileActivatedEventArgs args)
    {
      await ShowExtendedSplash(args.SplashScreen);

      base.OnFileActivated(args);

      if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
      {
        //TODO: Load state from previously suspended application
        //await SuspensionManager.RestoreAsync(); 
      }

      // Create a Frame to act navigation context and navigate to the first page
      var rootFrame = new Frame();
      rootFrame.Navigate(typeof(MainPage), args);

      // Place the frame in the current Window and ensure that it is active
      Window.Current.Content = rootFrame;
      Window.Current.Activate();
    }

    /// <summary>
    /// Invoked when application execution is being suspended.  Application state is saved
    /// without knowing whether the application will be terminated or resumed with the contents
    /// of memory still intact.
    /// </summary>
    /// <param name="sender">The source of the suspend request.</param>
    /// <param name="e">Details about the suspend request.</param>
    void OnSuspending(object sender, SuspendingEventArgs e)
    {
      //TODO: Save application state and stop any background activity
    }

    protected override void OnShareTargetActivated(Windows.ApplicationModel.Activation.ShareTargetActivatedEventArgs args)
    {
      var shareTargetPage = new BluewaterSoft.Notepad.TextShareTargetPage();
      shareTargetPage.Activate(args);
    }
  }
}
